CONTENTS

 

1.         INTRODUCTION                                                                                                        1

1.1       Purpose of the Manual....................................................................................... 1

1.2       Project Description............................................................................................. 2

1.3       Scope of EM&A................................................................................................ 4

1.4       Works Programme and Works Location............................................................ 4

1.5       Organisation of the EM&A............................................................................... 5

1.6       Structure of the EM&A..................................................................................... 8

2.         EM&A GENERAL REQUIREMENTS                                                                    9

2.1       Introduction....................................................................................................... 9

2.2       Construction Phase EM&A............................................................................... 9

2.3       Operational Phase EM&A............................................................................... 12

3.         CONSTRUCTION PHASE AIR QUALITY                                                          13

3.1       Background...................................................................................................... 13

3.2       Air Quality Parameters..................................................................................... 13

3.3       Monitoring Equipment..................................................................................... 13

3.4       Laboratory Measurement/Analysis.................................................................. 15

3.5       Baseline Monitoring......................................................................................... 16

3.6       Impact Monitoring........................................................................................... 16

3.7       Event and Action Plan for Air Quality............................................................ 17

4.         NOISE IMPACT                                                                                                        21

4.1       Construction Phase.......................................................................................... 21

4.2       Operational Phase............................................................................................ 25

5.         WATER QUALITY IMPACT                                                                                 26

5.1       Construction Phase.......................................................................................... 26

5.2       Post-Construction Phase.................................................................................. 35

5.3       Operational Phase............................................................................................ 36

6.         WASTE MANAGEMENT                                                                                        37

6.1       Construction Phase.......................................................................................... 37

6.2       Operational Phase............................................................................................ 37

7.         ECOLOGY                                                                                                                  38

7.1       Pre-Construction Phase (Land-based)............................................................. 38

7.2       Ecological Monitoring (Marine-based)............................................................ 38

7.3       Construction Phase.......................................................................................... 44

7.4       Operational Phase............................................................................................ 44

8.         FISHERIES                                                                                                                 47

8.1       Construction Phase.......................................................................................... 47

8.2       Operational Phase............................................................................................ 47

9.         LANDSCAPE AND VISUAL IMPACT                                                                 48

9.1       General............................................................................................................. 48

9.2       Construction and Post-construction Phase...................................................... 48

9.3       Mitigation Measures......................................................................................... 59

9.4       Audit Requirement.......................................................................................... 59

10.       SITE ENVIRONMENT AUDIT                                                                              60

10.1     Site Inspections................................................................................................ 60

10.2     Compliance with Legal and Contractual Requirements.................................. 61

10.3     Environmental Complaints............................................................................... 61

10.4     Log Book......................................................................................................... 62

11.       REPORTING                                                                                                              63

11.1     General............................................................................................................. 63

11.2     Design Phase Audit......................................................................................... 63

11.3     Baseline Monitoring Report............................................................................. 63

11.4     Monthly EM&A Reports................................................................................. 64

11.5     Contents of the First Monthly EM&A Report................................................ 65

11.6     Contents of the Subsequent Monthly EM&A Report..................................... 66

11.7     Quarterly EM&A Summary Report................................................................. 67

11.8     Annual/Final Review EM&A Reports............................................................. 69

11.9     Data Keeping................................................................................................... 70

11.10   Electronic Reporting of EM&A Information.................................................. 70

11.11   Interim Notification of Environmental Quality Limit Exceedances................ 71

1.         INTRODUCTION                                                                                                        1

1.1       Purpose of the Manual....................................................................................... 1

1.2       Project Description............................................................................................. 2

1.3       Scope of EM&A................................................................................................ 4

1.4       Works Programme and Works Location............................................................ 4

1.5       Organisation of the EM&A............................................................................... 5

1.6       Structure of the EM&A..................................................................................... 8

2.         EM&A GENERAL REQUIREMENTS                                                                    9

2.1       Introduction....................................................................................................... 9

2.2       Construction Phase EM&A............................................................................... 9

2.3       Operational Phase EM&A............................................................................... 12

3.         CONSTRUCTION PHASE AIR QUALITY                                                          13

3.1       Background...................................................................................................... 13

3.2       Air Quality Parameters..................................................................................... 13

3.3       Monitoring Equipment..................................................................................... 13

3.4       Laboratory Measurement/Analysis.................................................................. 15

3.5       Baseline Monitoring......................................................................................... 16

3.6       Impact Monitoring........................................................................................... 16

3.7       Event and Action Plan for Air Quality............................................................ 17

4.         NOISE IMPACT                                                                                                        21

4.1       Construction Phase.......................................................................................... 21

4.2       Operational Phase............................................................................................ 25

5.         WATER QUALITY IMPACT                                                                                 26

5.1       Construction Phase.......................................................................................... 26

5.2       Post-Construction Phase.................................................................................. 35

5.3       Operational Phase............................................................................................ 36

6.         WASTE MANAGEMENT                                                                                        37

6.1       Construction Phase.......................................................................................... 37

6.2       Operational Phase............................................................................................ 37

7.         ECOLOGY                                                                                                                  38

7.1       Pre-Construction Phase (Land-based)............................................................. 38

7.2       Ecological Monitoring (Marine-based)............................................................ 38

7.3       Construction Phase.......................................................................................... 44

7.4       Operational Phase............................................................................................ 44

8.         FISHERIES                                                                                                                 46

8.1       Construction Phase.......................................................................................... 46

8.2       Operational Phase............................................................................................ 46

9.         LANDSCAPE AND VISUAL IMPACT                                                                 47

9.1       General............................................................................................................. 47

9.2       Construction and Post-construction Phase...................................................... 47

9.3       Mitigation Measures......................................................................................... 59

9.4       Audit Requirement.......................................................................................... 59

10.       SITE ENVIRONMENT AUDIT                                                                              60

10.1     Site Inspections................................................................................................ 60

10.2     Compliance with Legal and Contractual Requirements.................................. 61

10.3     Environmental Complaints............................................................................... 61

10.4     Log Book......................................................................................................... 62

11.       REPORTING                                                                                                              63

11.1     General............................................................................................................. 63

11.2     Design Phase Audit......................................................................................... 63

11.3     Baseline Monitoring Report............................................................................. 63

11.4     Monthly EM&A Reports................................................................................. 64

11.5     Contents of the First Monthly EM&A Report................................................ 65

11.6     Contents of the Subsequent Monthly EM&A Report..................................... 66

11.7     Quarterly EM&A Summary Report................................................................. 67

11.8     Annual/Final Review EM&A Reports............................................................. 69

11.9     Data Keeping................................................................................................... 70

11.10   Electronic Reporting of EM&A Information.................................................. 70

11.11   Interim Notification of Environmental Quality Limit Exceedances................ 71

 


 

LIST OF FIGURES

 

Figure 1.1

Project Location and Environmental Sensitive Receivers

Figure 1.2

Organization Structure

Figure 3.1

Construction Phase Air Quality Monitoring Locations

Figure 4.1

Construction Phase Noise Monitoring Locations

Figure 5.1

Water Quality Monitoring Locations in the Vicinity of the Proposed Beach Development

Figure 5.2

E. coli Monitoring Locations

Figure 7.1

Pre-translocation Monitoring Area for Seahorses at Lung Mei

Figure 7.2

Pre- and Post- Translocation Monitoring Area for Seahorses at Ting Kok East

 

 

 

APPENDICES

 

APPENDIX A                       Preliminary Construction Programme

APPENDIX B                        Complaint Log

APPENDIX C                       Proforma for Construction Phase EM&A Programme

APPENDIX D                       Interim Notifications

APPENDIX E                       Implementation Schedule

 

 


1.                  INTRODUCTION

 

1.1              Purpose of the Manual

 

This updated Environmental Monitoring and Audit (EM&A) Manual (“the Manual”) is prepared by Action-United Environmental Services and Consulting (AUES) as appointed by Welcome Construction Co. Ltd. on behalf of the Civil Engineering and Development Department (CEDD).  The Manual is a companion document of the EIA Study of the Development of a Bathing Beach at Lung Mei, Tai Po (hereafter referred to as the Project) which will undergo a series of revisions, as needed, to accommodate the progression of the construction programme.

 

The Manual has been prepared in accordance with the EIA Study Brief (No. ESB-138/2006) and the Technical Memorandum of the Environmental Impact Assessment Process (EIAO TM).  The purpose of the Manual is to provide information, guidance and instruction to personnel charged with environmental duties and those responsible for undertaking EM&A work during construction and operation. It provides systematic procedures for monitoring and auditing of potential environmental impacts that may arise from the works.

 

The EM&A Manual comprises descriptions of the key elements of the EM&A programme including:

 

·            Appropriate background information on the construction of the Project with reference to relevant technical reports;

 

·            Organisational arrangements, hierarchy and responsibilities with regard to the management of environmental performance during the construction phase. The EM&A team, the Contractor team and the Engineer Representative are included;

 

·            A broad construction programme indicating those activities for which specific mitigation is required and providing a schedule for their timely implementation;

 

·            Descriptions of the parameters to be monitored and criteria through which performance will be assessed including: monitoring frequency and methodology, monitoring locations (typically, the location of sensitive receivers as listed in the EIA), monitoring equipment lists, event contingency plans for exceedances of established criteria and schedule of mitigation and best practice methods for reduced adverse environmental impacts;

 

·            Procedures for undertaking on-site environmental performance audits as a means of ensuring compliance with environmental criteria; and

 

·            Reporting procedures.

The EM&A Manual will be a dynamic document which will undergo a series of revisions, as needed, to accommodate the progression of the construction programme.

1.2              Project Description

 

1.2.1        Background to the Study

 

The ex-Provisional Regional Council (ex-PRC) considered that one swimming pool complex in Tai Po was insufficient and hence suggested developing a bathing beach at Lung Mei, Tai Po. Therefore, on 12 May 1998, the Culture, Recreation and Sports Committee of ex-PRC approved funding for the Architectural Services Department (ArchSD) to study the feasibility of developing an artificial beach at Lung Mei.  The Feasibility Study, which commenced in December 1999 and completed in mid-2001, concluded that it was technically viable to construct a bathing beach at Lung Mei, Tai Po.

 

There is no beach facility in the east region of the New Territories, except in the Sai Kung District, which is very far from Tai Po District.  Moreover, the existing swimming facility in the Tai Po areas could not satisfy the demand for a bathing beach. Therefore, the public has been requesting repeatedly to the LCSD for a beach development in the Tai Po District.

 

In light of the above, the Tai Po District Council (TPDC) strongly requested for the development of a bathing beach at Lung Mei and members of the TPDC urged for early implementation of the Project.  In a Legislative Council case conference on 20 April 2004, Members requested the Government to accord priority to this Project.

 

Lung Mei is adjacent to a prominent leisure area, Tai Mei Tuk, with well-established facilities for holiday-makers and water-based recreation activities, which has attracted many visitors, in particular during public holidays. It is anticipated that the proposed bathing beach would complement the facilities already provided in the Tai Mei Tuk area.

 

1.2.2        The Proposed Project Site

 

The Project will involve the construction and operation of a bathing beach at Lung Mei, Tai Po.  The beach will provide a facility for visitors for leisure and recreation.  The Project will include the following facilities:

 

·      Construction of a 200m long beach with two groynes, which includes dredging and sandfilling;

 

·      Construction of two culverts at the eastern and western side of the beach, to collect and divert surface runoff from upstream locations; and,

 

·      Construction of associated beach building facilities, kiosk and a car park for visitors.

 

The Project constitutes a Designated Project by virtue of Items C.2 and C.12 of Part I of Schedule 2 under the EIAO.  The following elements of the Project addressed in this EIA Report are classified as Designated Projects under the Environmental Impact Assessment Ordinance (Cap. 499) (EIAO).

·      Dredging operation which is less than 500m from the nearest boundary of an existing Site of Special Scientific Interest, Coastal Protection Area, Conservation Area and Country Park.

 

1.2.3        Objectives of EM&A

 

The objectives of carrying out the EM&A for the Project include:

 

·            Providing baseline information against which any short or long term environmental impacts of the projects can be determined;

·            Providing an early indication should any of the environmental control measures or practices fail to achieve the acceptable standards;

·            Monitoring the performance of the Project and the effectiveness of mitigation measures;

·            Verifying the environmental impacts identified in the EIA;

·            Determining Project compliance with regulatory requirements, standards and government policies;

·            Taking remedial action if unexpected results or unacceptable impacts arise; and

·            Providing data to enable an environmental audit to be undertaken at regular intervals.

 

EM&A procedures are required during the design, construction, post-construction and operational phases of the project implementation and a summary of the requirements for each of the environmental parameters is detailed in Table 1.1 below.

 

1.2.4    Table 1.1        Summary of EM&A Requirements

 

Parameter

EM&A Phase

Design

Phase (1)

Construction Phase

Post-Construction Phase

Operation Phase

Air Quality

-

Yes

-

-

Noise

-

Yes

-

-

Water Quality

-

Yes

Yes

Yes

Waste

-

Yes

-

-

Ecology

- (2)

-

Yes

-

Fisheries

-

-

-

-

Landscape and Visual

Yes

Yes

Yes

Yes

Notes:    

(1) EM&A requirements in the design phase shall include confirmation on the compliance for environmental designs which were specified in the EIA Report and the EP for all parameters.

(2)  Although pre-construction monitoring may overlap the design phase, the focus of this monitoring will be to provide additional information on which to assess potential impacts through construction.

1.3              Scope of EM&A

 

The scope of this EM&A programme is to:

 

·            establish baseline air quality, noise and water quality levels at specified locations;

·            implement monitoring and site audit requirements for air quality, noise, water quality and ecology monitoring programme;

·            liaise with, and provide environmental advice (as requested or when otherwise necessary) to construction site staff on the significance and implications of the environmental monitoring data;

·            identify and resolve environmental issues and other functions as they may arise from the works;

·            check and quantify the Contractor(s)’s overall environmental performance, implementation of Event and Action Plans (EAPs), and remedial actions taken to mitigate adverse environmental effects as they may arise from the works;

·            conduct monthly reviews of monitored impact data as the basis for assessing compliance with the defined criteria and to ensure that necessary mitigation measures are identified and implemented, and to undertake additional ad hoc monitoring and auditing as required by special circumstances;

·            evaluate and interpret environmental monitoring data to provide an early indication should any of the environmental control measures or practices fail to achieve the acceptable standards, and to verify the environmental impacts predicted in the EIA;

·            manage and liaise with other individuals or parties concerning other environmental issues deemed to be relevant to the construction process;

·            conduct regular site inspections of a formal or informal nature to assess:

-       the level of the Contractor(s)’s general environmental awareness;

-       the Contractor(s)’s implementation of the recommendations in the EIA and their contractual obligations;

-       the Contractor(s)’s performance as a measured by the EM&A;

-       the need for specific mitigation measures to be implemented or the continued usage of those previously agreed;

-       to advise the site staff of any identified potential environmental issues; and,

-       submit monthly EM&A reports which summarise project monitoring and auditing data, with full interpretation illustrating the acceptability or otherwise of any environmental impacts and identification or assessment of the implementation status of agreed mitigation measures.

 

1.4              Works Programme and Works Location

 

The construction works are anticipated to commence in 2008.  The preliminary construction programme is given in Appendix A.  It should be noted that the Tolo Harbour Sewerage of Unsewered Areas Stage I Phase IIC (Agreement No. CE 18/94) will carry out works connecting the unsewered areas from Ting Kok village to Lung Mei village, which are in the vicinity of the bathing beach development. The sewerage construction works is scheduled to be completed prior to the operation of this Proposed Bathing Beach Development project. With the implementation of the sewerage connection (expect to be 60% connection rate) and the gazette of the Tolo Harbour Sewerage of Unsewered Areas Stage I Phase IIC (Agreement No. CE 18/94) including Lung Mei area, as part of the Sewerage Master Plan Works for Tolo Harbour Catchment, the water quality at Lung Mei will be improved and guaranteed, and facilitating the operation of this bathing beach.

 

The locations of works are shown in Figure 1.1.  The Sensitive Receivers in the vicinity of the proposed project are presented in Figure 1.1.

 

1.5       Organisation of the EM&A

 

1.5.1    General

 

The Contractor will appoint an Environmental Team (ET) to conduct the monitoring and auditing works and to provide specialist advice on undertaking and the implementation of environmental responsibilities.

 

The ET will have previous relevant experience with managing similarly sized EM&A programmes and the Environmental Team Leader (ET Leader) will be a recognised environmental professional, preferably with a minimum of seven years relevant experience in impact assessments and impact monitoring programmes.

 

To maintain strict control of the EM&A process, CEDD will appoint independent environmental consultants to act as an Independent Environmental Checker (IEC) to verify and validate the environmental performance of the Contractor(s) and his Environmental Team.  The IEC will have previous relevant experience with checking and auditing similarly sized EM&A programmes and the IEC will be a recognised environmental professional, preferably with a minimum of seven years relevant experience in impact assessments and impact monitoring programmes.

 

1.5.2    Project Organisation

 

The roles and responsibilities of the various parties involved in the EM&A process are further expanded in the following sections and in Figure 1.2.

 

The ET Leader will be responsible for, and in charge of, the Environmental Team; and will be the person responsible for executing the EM&A requirements.


 

Engineer Representative (ER)

 

ER will:

·            monitor the Contractor’s compliance with contract specifications, including the effective implementation and operation of environmental mitigation measures and other aspects of the EM&A programme;

·            instruct the Contractor to follow the agreed protocols or those in the Contract Specifications in the event of exceedances or complaints;

·            comply with the agreed Event and Action Plans in the event of any exceedance;

·            liaise with the IEC and assist as necessary in the implementation of the EM&A program; and

·            participate in joint site inspections undertaken by the ET and IEC.

 

The Contractor

 

The Contractor will:

·            work within the scope of the construction contract and other tender conditions;

·            provide assistance to the ET in carrying out monitoring;

·            submit proposals on mitigation measures in case of exceedances of Action and Limit levels in accordance with the Event and Action Plans;

·            implement measures to reduce impact where Action and Limit levels are exceeded;

·            implement the corrective actions instructed by ER/ET/IEC;

·            participate in the site inspections undertaken by the ET and the IEC, as required, and undertake any corrective actions instructed by ER/ET/IEC; and

·            adhere to the procedures for carrying out complaint investigation.

 

Environmental Team (ET)

 

The ET will:

·            monitor various environmental parameters as required in this EM&A Manual;

·            assess the EM&A data and review the success of the EM&A programme determining the adequacy of the mitigation measures implemented and the validity of the EIA predictions as well as identify any adverse environmental impacts before they arise;

·            carry out regular site inspection to investigate and audit the Contractor’s site practice, equipment and work methodologies with respect to pollution control and environmental mitigation, and effect proactive action to pre-empt issues;

·            review the Contractor’s working programme and methodology, and comment as necessary;

·            review and prepare reports on the environmental monitoring data, site environmental conditions and audits;

·            report on the environmental monitoring and audit results and conditions to the IEC, Contractor(s), EPD and ER;

·            recommend suitable mitigation measures to the Contractor in the case of exceedance of Action and Limit levels in accordance with the Event and Action Plans;

·            adhere to the procedures for carrying out complaint investigation; and,

·            the ET Leader will keep a contemporaneous log-book and record each and every instance or circumstance or change of circumstances which may affect the environmental impact assessment and every non-conformance with the recommendations of the EIA Reports or the EPs.

 

The ET will be led and managed by the ET Leader.  The ET leader will have relevant education, training, knowledge, experience and professional qualifications and the appointment will be subject to the approval of the Director of Environmental Protection and ER.  Suitably qualified staff will be included in the ET, and the ET should not be in any way an associated body of the Contractor or the Independent Environmental Checker (IEC) for the Project.

 

Independent Environmental Checker (IEC)

 

The IEC will:

·            review and monitor the implementation of the EM&A programme and the overall level of environmental performance being achieved;

·            arrange and conduct monthly independent site inspections/audits of the works;

·            validate and confirm the accuracy of monitoring results, monitoring equipment, monitoring stations, monitoring procedures and locations of sensitive receivers;

·            carry out random sample check and audit on monitoring data and sampling procedures, etc;

·            audit the EIA recommendations and requirements against the status of implementation of environmental protection measures on site;

·            on needed basis, audit the Contractor(s)’s construction methodology and agree the appropriate, reduced impact alternative in consultation with ER, the ET and the Contractor;

·            provide specialist advice to ER and the Contractor on environmental matters;

·            check complaint cases and the effectiveness of corrective measures;

·            check that the necessary mitigation measures recommended in the EIA, EP and Contract documents, or as subsequently required, are effectively implemented;

·            review EM&A report submitted by the ET leader and feedback audit results to ET by signing off relevant EM&A proformas;

·            report the findings of site inspections/ audits and other environmental performance reviews to ER, ET, EPD and the Contractor(s); and

Sufficient and suitably qualified professional and technical staff will be employed by the respective parties to ensure full compliance with their duties and responsibilities, as required under the EM&A programme for the duration of the Project.

 

1.6              Structure of the EM&A

 

The remainder of the Manual is set out as follows:

 

·            Section 2 sets out the EM&A general requirements;

·            Section 3 sets out the EM&A requirement for construction phase air quality;

·            Section 4 sets out the EM&A requirement for noise;

·            Section 5 details the requirements for water quality;

·            Section 6 details the requirements for waste management;

·            Section 7 details the requirements for ecology;

·            Section 8 details the requirements for fisheries;

·            Section 9 sets out the EM&A requirements for landscape and visual;

·            Section 10 describes the scope and frequency of site environmental auditing; and

·            Section 11 details the reporting requirements for the EM&A.

 

Appendix E presents the Implementation Schedule.

 


2.                  EM&A GENERAL REQUIREMENTS

 

2.1              Introduction

 

In this section, the general requirements of the EM&A programme for the Project are presented with reference to the relevant findings from the EIA Report that has formed the basis of the scope and content of the programme.

 

2.2              Construction Phase EM&A

 

General

 

The environmental issues, which were identified during the EIA process and are associated with the construction phase of the Project, will be addressed through the monitoring and controls specified in this EM&A Manual and in the construction contracts.  Appendix E lists out the measures required during the construction and operational phases of the project.

 

During the construction phases of the Project, air quality, noise quality, water quality, waste, ecology and landscape and visual will be subject to EM&A, with environmental monitoring being undertaken for air quality, noise, water quality and ecology.  Monitoring of the effectiveness of the mitigation measures will be achieved through the environmental monitoring programme as well as through site inspections.  The inspections will include within their scope, mechanisms to review and assess the Contractor(s)’s environmental performance, ensuring that the recommended mitigation measures (Appendix E) have been properly implemented, and that the timely resolution of received complaints are managed and controlled in a manner consistent with the recommendations of the EIA Report.

 

Environmental Monitoring

 

The environmental monitoring work throughout the Project period will be carried out in accordance with this EM&A and reported by the ET.  Monitoring works will comprise of quantitative assessment of physical parameters such as air quality, noise and water quality impacts which also form an important part of the whole monitoring programme.  The monitoring programme will be conducted at the chosen representative sensitive receivers in the vicinity of the construction site.

 


Action and Limit Levels

 

Action and Limit (A/L) Levels are defined levels of impact recorded by the environmental monitoring activities which represent levels at which a prescribed response is required.  These Levels are quantitatively defined later in the relevant sections of this manual and described in principle below:

 

Action Levels: beyond which there is a clear indication of a deteriorating ambient environment for which appropriate remedial actions are likely to be necessary to prevent environmental quality from falling outside the Limit Levels, which would be unacceptable; and

 

Limit Levels: statutory and/or agreed contract limits stipulated in the relevant pollution control ordinances, HKPSG or Environmental Quality Objectives established by the EPD.  If these are exceeded, works will not proceed without appropriate remedial action, including a critical review of plant and working methods.

 

Event and Action Plans

 

The purpose of the Event and Action Plans (EAPs) is to provide, in association with the monitoring and audit activities, procedures for ensuring that if any significant environmental incident (either accidental or through inadequate implementation of mitigation measures on the part of the Contractor) does occur, the cause will be quickly identified and remedied, and the risk of a similar event recurring is reduced.  This also applies to the exceedances of A/L criteria identified in the EM&A programme

 

Site Inspections

 

In addition to monitoring of air quality, noise, water quality and ecology as a means of assessing the ongoing performance of the Contractor, the ET will undertake site inspections and audits of on-site practices and procedures twice per month.  The primary objective of the inspection and audit programme will be to assess the effectiveness of the environmental controls established by the Contractor and the implementation of the environmental mitigation measures recommended in the EIA Report and EM&A Manual.  The IEC will undertake monthly site inspection and audit to assess the performance of the Contractor.

 

Whilst the audit and inspection programme will undoubtedly complement the monitoring activity with regard to the effectiveness of controlling impacts to air quality, noise, water quality and ecology, the criteria against which the audits will be undertaken will be derived from the Clauses within the Contract Documents which seek to enforce the recommendations of the EIA Report and the established management systems.

 


The findings of site inspections and audits will be made known to the Contractor at the time of the inspection to enable the rapid resolution of identified non-conformities.  Non-conformities, and the corrective actions undertaken, will also be reported in the monthly EM&A Reports.

 

Section 10 of this Manual presents details of the scope and frequency of on-site inspections and defines the range of issues that the audit protocols will be designed to address.

 

Enquiries, Complaint and Requests for Information

Enquiries, complaints and requests for information may occur from a wide range of individuals and organisations including members of the public, Government departments, the press and television media and community groups.

 

Enquiries concerning the environmental effects of the construction works, irrespective of how they are received, will be reported to CEDD/ER and directed to the ET which will set up procedures for the handling, investigation and storage of such information.  The following steps will then be followed:

 

1)        The ET Leader will notify CEDD/ER of the nature of the enquiry.

 

2)        An investigation will be initiated to determine the validity of the complaint and to identify the source of the issue.

 

3)        The Contractor will undertake the following steps, as necessary:

·         investigate and identify source of the issue;

·         if considered necessary by CEDD/ER following consultation with the IEC, undertake additional monitoring to verify the existence and severity of the alleged complaint;

·         liaise with EPD to identify remedial measures;

·         liaise with the IEC to identify remedial measures;

·         implement the agreed mitigation measures;

·         repeat the monitoring to verify effectiveness of mitigation measures; and

·         repeat review procedures to identify further practical areas of improvement if the repeat monitoring results continue to substantiate the complaint.

 

4)         The outcome of the investigation and the action taken will be documented on a complaint log (Appendix B).  A formal response to each complaint received will be prepared by the Contractor within five working days and submitted to ER, in order to notify the concerned person(s) that action has been taken.

 

5)         Enquires which trigger this process will be reported in the monthly reports which will include results of inspections undertaken by the Contractor, and details of the measures taken, and additional monitoring results (if deemed necessary).  It should be noted that the receipt of complaint or enquiry will not be, in itself, a sufficient reason to introduce additional mitigation measures.

 

The complainant will be notified of the findings, and audit procedures will be put in place to ensure that the issue does not recur.

 

            Reporting

 

Baseline, construction phase and post-construction phase monitoring, monthly, quarterly and final reports will be prepared and certified by the ET Leader and verified by the IEC.  The reports will be submitted to the Contractor, ER and EPD.  The monthly reports will be prepared and submitted within two weeks of the end of each calendar month.

 

Cessation of EM&A

 

The cessation of EM&A programme is subject to the satisfactory completion of the EM&A Final Review Report, agreement with the IEC and approval from EPD.

 

2.3              Operational Phase EM&A

 

Ecology, water quality and landscape & visual monitoring will be required during the post-construction and/or operational phase of the Project.  Details are described in the corresponded sections.

 


3.                  CONSTRUCTION PHASE AIR QUALITY 

 

3.1              Background

 

Whilst fugitive dust impacts are not anticipated, a construction dust monitoring programme is recommended to ensure compliance with the relevant criterion during the construction works.  Monitoring of dust levels, in terms of Total Suspended Particulates (TSP), should be conducted every six days throughout the construction period at ASRs A4 (No. 101 Lung Mei Tsuen) and A6 (No. 79 Lo Tsz Tin Tsuen).  During liaison with the landlords of ASR A6, the landlord refused to provide access and location for installation of HVAS at their premises area. Therefore, alternative locations A7 (Hong Kong Eco-Farm) was proposed by ETL and the proposal was agreed by IEC.  Figure 3.1 shows the locations of the construction phase air quality monitoring.

 

In accordance with the recommendations of the EIA, mitigation measures have been proposed during the construction phase of the Project. Details of the mitigation measures are presented in Appendix E - Implementation Schedule.

 

3.2              Air Quality Parameters

 

1-hour and 24-hour TSP levels shall be measured to indicate the impacts of construction dust on air quality.  The TSP levels shall be measured by following the standard high volume sampling method as set out in the Title 40 of the Code of Federal Regulations, Chapter 1 (Part 50), Appendix B.  Upon approval of the ER, 1-hour TSP levels can be measured by direct reading methods which are capable of producing comparable results as that by the high volume sampling method, to indicate short event impacts.  All relevant data including temperature, pressure, weather conditions, elapsed-time meter reading for the start and stop of the sampler, identification and weight of the filter paper, and any other local atmospheric factors affecting or affected by site conditions etc. shall be recorded down in detail. A sample data sheet is shown in Appendix C.

 

3.3              Monitoring Equipment

 

High volume sampler (HVS) in compliance with the following specifications shall be used for carrying out the 1-hr and 24-hr TSP monitoring:

 

a)      0.6-1.7 m3/min (20-60 SCFM) adjustable flow range;

b)      equipped with a timing/control device with +/- 5 minutes accuracy for 24 hours operation;

c)      installed with elapsed-time meter with +/- 2 minutes accuracy for 24 hours operation;

d)     capable of providing a minimum exposed area of 406 cm2 (63 in2);

e)      flow control accuracy: +/- 2.5% deviation over 24-hr sampling period;

f)       equipped with a shelter to protect the filter and sampler;

g)      incorporated with an electronic mass flow rate controller or other equivalent devices;

h)      equipped with a flow recorder for continuous monitoring;

i)        provided with a peaked roof inlet;

j)        incorporated with a manometer;

k)      able to hold and seal the filter paper to the sampler housing at horizontal position;

l)        easy to change the filter; and

m)    capable of operating continuously for 24-hr period.

 

The HVSs shall be equipped with an electronic mass flow controller and be calibrated against a traceable standard at regular intervals.  All the equipment, calibration kit, filter papers, etc. shall be clearly labelled.

 

Initial calibration of dust monitoring equipment shall be conducted upon installation and thereafter at bi-monthly intervals.  The transfer standard shall be traceable to the internationally recognized primary standard and be calibrated annually.  The calibration data shall be properly documented for future reference by the concerned parties such as the IEC.  All the data shall be converted into standard temperature and pressure condition.  The flow-rate of the sampler before and after the sampling exercise with the filter in position shall be verified to be constant and be recorded down in the data sheet in Appendix C.

 

If the ET Leader proposes to use a direct reading dust meter to measure 1-hr TSP levels, he shall submit sufficient information to the IEC to prove that the instrument is capable of achieving a comparable result as that of the HVS and may be used for the 1-hr sampling.  The instrument shall also be calibrated regularly, and the 1-hr sampling shall be determined periodically by HVS to check the validity and accuracy of the results measured by direct reading method.  Portable dust meter for 1-hr TSP monitoring was proposed by ETL and the proposal was accepted by IEC, subject that the dust meter capable of achieving a comparable result as that of the HVS.  The 1-hour sampling will be calibrated by HVS annually to check the validity and accuracy of the results measured by direct reading method.

 

Wind data monitoring equipment shall also be provided and set up at conspicuous locations for logging wind speed and wind direction near to the dust monitoring locations.  The equipment installation location shall be proposed by the ET Leader and agreed with the ER in consultation with the IEC.  It is proposed by ETL and accepted by IEC to adopt the HKO meteorological information from Tai Po and Tai Mei Tuk Station rather than setting up wind data monitoring equipment based on the justification below:

 

(a)    Installation of a wind sensor of 10 metres aboveground, according to the EM&A Manual, involves construction of the foundation for the reasonably strong 10 meter metal pole, which, according to the ET’s past experience, may provoke fierce opposition of the ASR owners, and is therefore hardly to be practicable under limited time and resources

(b)   HKO meteorological information is widely accepted to be used in many environmental reports within HKSAR due to its professional quality and precision, in addition its readily availability and accessibility via the HKO website.

3.4              Laboratory Measurement/Analysis

 

A clean laboratory with constant temperature and humidity control, and equipped with necessary measuring and conditioning instruments, to handle the dust samples collected, shall be available for sample analysis, and equipment calibration and maintenance.  The laboratory shall be HOKLAS accredited or other internationally accredited laboratory.

 

If a site laboratory is set up or a non-HOKLAS accredited laboratory is hired for carrying out the laboratory analysis, the laboratory equipment shall be approved by the ER in consultation with the IEC.

 

Measurement performed by the laboratory shall be demonstrated to the satisfaction of the ER and the IEC.  IEC shall conduct regular audit to the measurement performed by the laboratory to ensure the accuracy of measurement results.  The ET Leader shall provide the ER with one copy of the Title 40 of the Code of Federal Regulations, Chapter 1 (Part 50), Appendix B for his reference.

 

Filter paper of size 8"x10" shall be labelled before sampling. It shall be a clean filter paper with no pin holes, and shall be conditioned in a humidity controlled chamber for over 24-hr and be pre-weighed before use for the sampling.

 

After sampling, the filter paper loaded with dust shall be kept in a clean and tightly sealed plastic bag.  The filter paper is then returned to the laboratory for reconditioning in the humidity controlled chamber followed by accurate weighing by an electronic balance with readout down to 0.1 mg.  The balance shall be regularly calibrated against a traceable standard.

 

All the collected samples shall be kept in a good condition for 6 months before disposal.

 

The status and locations of dust sensitive receivers may change after issuing this manual.  If such cases exist, the ET Leader shall propose updated monitoring locations and seek approval from ER and agreement from the IEC.  When alternative monitoring locations are proposed, the following criteria, as far as practicable, shall be followed:

 

a)      at the site boundary or such locations close to the major dust emission source;

b)      close to the sensitive receptors; and

c)      take into account the prevailing meteorological conditions.

 

The ET Leader shall agree with the ER in consultation with the IEC the position of the HVS for installation of the monitoring equipment. When positioning the samplers, the following points shall be noted:

 

a)      a horizontal platform with appropriate support to secure the samplers against gusty wind shall be provided;

b)      no two samplers shall be placed less than 2 metre apart;

c)      the distance between the sampler and an obstacle, such as buildings, must be at least twice the height that the obstacle protrudes above the sampler;

d)     a minimum of 2 metres of separation from walls, parapets and penthouses is required for rooftop samplers;

e)      a minimum of 2 metre separation from any supporting structure, measured horizontally is required;

f)       no furnace or incinerator flue is nearby;

g)      airflow around the sampler is unrestricted;

h)      the sampler is more than 20 metres from the dripline;

i)        any wire fence and gate, to protect the sampler, shall not cause any obstruction during monitoring;

j)        permission must be obtained to set up the samplers and to obtain access to the monitoring stations; and

k)      a secured supply of electricity is needed to operate the samplers.

 

3.5              Baseline Monitoring

 

The ET Leader shall carry out baseline monitoring at all of the designated monitoring locations for at least 14 consecutive days prior to the commissioning of the construction works to obtain daily 24-hr TSP samples. 1-hr sampling shall also be done at least 3 times per day while the highest dust impact is expected.  Before commencing the baseline monitoring, the ET leader shall inform the IEC of the baseline monitoring programme such that the IEC can conduct on-site audit to ensure accuracy of the baseline monitoring results.  During the baseline monitoring, there shall not be any construction or dust generation activities in the vicinity of the monitoring stations.  In case the baseline monitoring cannot be carried out at the designated monitoring locations during the baseline monitoring period, the ET Leader shall carry out the monitoring at alternative locations which can effectively represent the baseline conditions at the impact monitoring locations.  The alternative baseline monitoring locations shall be approved by the ER and agreed with the IEC.

 

In exceptional cases, when insufficient baseline monitoring data or questionable results are obtained, the ET Leader shall liaise with the IEC and EPD to agree on an appropriate set of data to be used as a baseline reference and submit to ER for approval.

 

Ambient conditions may vary seasonally and shall be reviewed at three monthly intervals.  If the ET Leader considers that the ambient conditions have been changed and a repeat of the baseline monitoring is required to be carried out for obtaining the updated baseline levels, the monitoring shall be at times when the contractor's activities are not generating dust, at least in the proximity of the monitoring stations.  Should change in ambient conditions be determined, the baseline levels and, in turn, the air quality criteria, shall be revised.  The revised baseline levels and air quality criteria shall be agreed with the IEC and EPD.

 

3.6              Impact Monitoring

 

The ET Leader shall carry out impact monitoring during the course of the Works.  For regular impact monitoring, the sampling frequency of at least once in every six-days, shall be strictly observed at all the monitoring stations for 24-hr TSP monitoring. For 1-hr TSP monitoring, the sampling frequency of at least three times in every six-days shall be undertaken when the highest dust impact occurs.  Before commencing the baseline monitoring, the ET leader shall inform the IEC of the impact monitoring programme such that the IEC can conduct on-site audit to ensure accuracy of the impact monitoring results.

 

The specific time to start and stop the 24-hr TSP monitoring shall be clearly defined for each location and be strictly followed by the field operator.  In case of non-compliance with the air quality criteria, more frequent monitoring exercise, as specified in the Action Plan, shall be conducted within 24 hours after the result is obtained. This additional monitoring shall be continued until the excessive dust emission or the deterioration in air quality is rectified.

 

3.7              Event and Action Plan for Air Quality

 

The baseline monitoring results form the basis for determining the air quality criteria for the impact monitoring. The ET Leader shall compare the impact monitoring results with air quality criteria set up for 24-hour TSP and 1-hour TSP.  Table 3.1 shows the air quality criteria, namely Action and Limit levels to be used.  Should non-compliance of the air quality criteria occur, actions in accordance with the Action Plan in Table 3.2 shall be carried out.

In addition to the dust monitoring, regular site audits (at a frequency of not less than once every two weeks) are recommended to ensure that appropriate dust control measures are implemented and good site practices are adopted throughout the construction period.

Table 3.1        Action and Limit Levels for Air Quality Monitoring

Monitoring Station

Action Level (mg /m3)

Limit Level (mg/m3)

1-hour TSP

24-hour TSP

1-hour TSP

24-hour TSP

A4

275

142

500

260

A7

274

141

500

260

Note:   1-hour & 24-hour TSP Action Level = (Baseline × 1.3 + Limit level)/2

 


Table 3.2   Event and Action Plan for Air Quality

EVENT

ACTION

ET

IEC

ER

Contractor

Action Level Exceedance for One Sample

1.        Identify source(s) of impact;

2.        Inform the IEC and the ER;

3.        Repeat measurement to confirm findings;

4.        Increase monitoring frequency to daily

 

1.        Check monitoring data submitted by ET;

2.        Check Contractor’s working method

1.        Notify Contractor

1.        Rectify any unacceptable practice;

2.        Amend working methods if appropriate

Action Level Exceedance for Two or More Consecutive Samples

1.        Identify source(s) of impact;

2.        Inform the IEC and ER;

3.        Repeat measurement to confirm findings;

4.        Increase monitoring frequency to daily;

5.        Discuss with IEC and Contractor on remedial action required;

6.        If exceedance continues, arrange meeting with IEC and ER;

7.        If exceedance stops, cease additional monitoring

 

1.          Checking monitoring data submitted by ET;

2.          Check Contractor’s working method;

3.          Discuss with ET and Contractor on  possible remedial measures;

4.          Advise the ER on the effectiveness of the proposed remedial measures;

5.          Supervisor implementation of remedial measures

1.        Confirm receipt of notification of failure in writing;

2.        Notify Contractor;

3.        Ensure remedial measures properly implemented

1.         Submit proposals for remedial actions to IEC within 3 working days of notification;

2.         Implement the agreed proposals;

3.         Amend proposal if appropriate

Limit Level Exceedance for One Sample

1.        Identify source(s) of impact;

2.        Inform the EPD and the ER;

3.        Repeat measurement to confirm findings;

4.        Increase monitoring frequency to daily;

5.        Assess effectiveness of Contractor’s remedial actions and keep IEC, EPD and ER informed of results

 

1.        Check monitoring data submitted by ET;

2.        Check Contractor’s working method;

3.        Discuss with ET and Contractor on possible remedial measures;

4.        Advise the ER on the effectiveness of the proposed remedial measures;

5.        Supervise implementation of remedial measures

1.        Confirm receipt of notification of failure in writing;

2.        Notify Contractor;

3.        Ensure remedial measures properly implemented

1.        Take immediate action to avoid further exceedance;

2.        Submit proposals for remedial actions to IEC within 3 working days of notification;

3.        Implement the agreed proposals

4.        Amend proposal if appropriate

Limit Level Exceedance for Two or More Consecutive Samples

1.        Notify IEC, ER, Contractor and EPD;

2.        Identify source(s) of impact;

3.        Repeat measurement to confirm findings;

4.        Increase monitoring frequency to daily;

5.        Carry out analysis of Contractor’s working procedures to determine possible mitigation to be implemented;

6.        Arrange meeting with IEC and ER to discuss the remedial actions to be taken;

7.        Assess effectiveness of Contractor’s remedial action and keep IEC, EPD and ER informed of the results;

8.        If exceedance stops, cease additional monitoring

 

1.        Discuss amongst ER, ET, and Contractor on the potential remedial actions;

2.        Review Contractor’s remedial actions whenever necessary to assure their effectiveness and advise the ER accordingly;

3.        Supervise the implementation of remedial measures

1.        Confirm receipt of notification of failure in writing;

2.        Notify Contractor;

3.        In consultation with the IEC, agree with the Contractor on the remedial measures to be implemented;

4.        Ensure remedial measures properly implemented;

5.        If exceedance continues, consider what portion of the work is responsible and instruct the Contractor to stop that portion of work until the exceedance is abated

1.        Take immediate action to avoid further exceedance;

2.        Submit proposals for remedial actions to IEC within 3 working days of notification;

3.        Implement the agreed proposals

4.        Resubmit proposals if problem still not under control;

5.        Stop the relevant portion of works as determined by the ER until the exceedance is abated

ET – Environmental Team, IEC – Independent Environment Checker, ER – Engineer Representative

 


4.                  NOISE IMPACT

 

4.1       Construction Phase

 

Noise monitoring is recommended during the construction phase to ensure compliance with the noise criterion at the NSRs.  Weekly noise monitoring should be undertaken at the representative NSRs (N1 – N4) (Table 4.1 and Figure 4.1).  Regular site audits at the frequency of twice a month should be conducted to ensure that the recommended mitigation measures are properly implemented during the construction stage. 

 

As confirmed on the first day of baseline monitoring, N2a (House no. 101 Lung Mei) has been changed to residential use. Therefore, the baseline noise monitoring is conducted at N2a and to replace N2.  Moreover, due to the lack of accessibility of noise monitoring at N3 (Village house – No. 70 Lo Tsz Tin), alternative location N3a (Village house – No. 66C Lo Tsz Tin) was proposed by ETL and the proposal was agreed by IEC. The noise monitoring location is listed in Table 4.1 and Figure 4.1 shows the locations of the construction phase noise quality monitoring.

 

In accordance with the recommendations of the EIA, mitigation measures have been proposed during the construction phase of the Project.  Details of the mitigation measures are presented in Appendix E - Implementation Schedule.

 

Table 4.1        Locations for Construction Noise Monitoring

NSR

Location

N1

Village house - No. 165A Lung Mei

N2a

Village house - No. 101 Lung Mei

N3a

Village house - No. 66C Lo Tsz Tin

N4

Village house - No. 79 Lo Tsz Tin

 

4.1.1    Noise Parameters

 

The construction noise level shall be measured in terms of the A-weighted equivalent continuous sound pressure level (Leq).  Leq(30 min) shall be used as the monitoring parameter for the time period between 0700-1900 hours on normal weekdays.  For all other time periods, Leq(5 min) shall be employed for comparison with the NCO criteria.

 

As supplementary information for data auditing, statistical results such as L10 and L90 shall also be obtained for reference.  A sample data record sheet is shown in Appendix C for reference.

 

4.1.2    Monitoring Equipment

 

As referred to in the Technical Memorandum (TM) issued under the Noise Control Ordinance (NCO), sound level meters in compliance with the International Electrotechnical Commission Publications 651: 1979 (Type 1) and 804: 1985 (Type 1) specifications shall be used for carrying out the noise monitoring.  Immediately prior to and following each noise measurement the accuracy of the sound level meter shall be checked using an acoustic calibrator generating a known sound pressure level at a known frequency. Measurements may be accepted as valid only if the calibration level from before and after the noise measurement agrees to within 1.0 dB.  Noise measurements should not be made in accordance with standard acoustical principles and practices in relation to weather conditions.

 

The ET Leader is responsible for the availability of monitoring equipment. He shall ensure that sufficient noise measuring equipment and associated instrumentation are available for carrying out the baseline monitoring, regular impact monitoring and ad hoc monitoring. All the equipment and associated instrumentation shall be clearly labelled.

 

4.1.3    Monitoring Locations

 

The noise monitoring locations have been shown in Table 4.1 and Figure 4.1. The status and locations of noise sensitive receivers may change after issuing this manual.  If such cases exist, the ET Leader shall propose updated monitoring locations and seek approval from ER and agreement from the IEC and EPD of the proposal.

 

When alternative monitoring locations are proposed, the monitoring locations shall be chosen based on the following criteria:

 

a)      at locations close to the major site activities which are likely to have noise impacts;

b)      close to the noise sensitive receivers (N.B. For the purposes of this section, any domestic premises, hotel, hostel, temporary housing accommodation, hospital, medical clinic, educational institution, place of public worship, library, court of law, performing art centre shall be considered as a noise sensitive receiver); and

c)      for monitoring locations located in the vicinity of the sensitive receivers, care shall be taken to cause minimal disturbance to the occupants during monitoring.

 

The monitoring station shall normally be at a point 1m from the exterior of the sensitive receivers building facade and be at a position 1.2m above the ground.  If there is a problem with access to the normal monitoring position, an alternative position may be chosen, and a correction to the measurements shall be made.  For reference, a correction of +3 dB(A) shall be made to the free field measurements.  The ET Leader shall agree with the IEC on the monitoring position and the corrections adopted. Once the positions for the monitoring stations are chosen, the baseline monitoring and the impact monitoring shall be carried out at the same positions.

 

4.1.4    Impact Monitoring

 

Weekly noise monitoring shall be carried out at all the designated monitoring stations to obtain one set of 30-minute measurement between 0700-1900 hours. 

 

General construction work carrying out during restricted hours is controlled by CNP system under the NCO.

 

In case of non-compliance with the construction noise criteria, more frequent monitoring as specified in the Action Plan in Table 4.3 shall be carried out.  This additional monitoring shall be continued until the recorded noise levels are rectified or proved to be irrelevant to the construction activities.

 

4.1.5    Event and Action Plan for Noise

 

The Action and Limit levels for construction noise are defined in Table 4.2. Should non-compliance of the noise quality criteria occur, actions in accordance with the Action Plan in Table 4.3 shall be carried out.

 

Table 4.2        Action and Limit Levels for Construction Noise Monitoring

Time Period

Action

Limit

0700-1900 hrs on normal weekdays

When one documented compliant is received

75* dB(A)

* Reduce to 70 dB(A) for schools and 65 dB(A) during school examination period.

 

 


Table 4.3   Event and Action Plan for Noise

EVENT

ACTION

ET

IEC

ER

Contractor

Action Level

1.        Notify IEC and Contractor;

2.        Carry out investigation;

3.        Report the results of investigation to the IEC and Contractor;

4.        Discuss with the Contractor and formulate remedial measures;

5.        Increase monitoring frequency to check mitigation effectiveness 

1.        Review the analysed results submitted by the ET;

2.        Review the proposed remedial measures by the Contractor and advise the ER accordingly;

3.        Supervise the implementation of remedial measures

1.        Confirm receipt of notification of failure in writing;

2.        Notify Contractor;

3.        Require Contractor to propose remedial measures for the analysed noise problem;

4.        Ensure remedial measures are properly implemented

1.        Submit noise mitigation proposals to IEC;

2.        Implement noise mitigation proposals

Limit Level

1.        Notify IEC, ER, EPD and Contractor;

2.        Identify source;

3.        Carry out investigation;

4.        Report the results of investigation to the IEC and Contractor;

5.        Discuss with the Contractor and formulate remedial measures;

6.        Increase monitoring frequency to check mitigation effectiveness 

1.        Review the analysed results submitted by the ET;

2.        Review the proposed remedial measures by the Contractor and advise the ER accordingly;

3.        Supervise the implementation of remedial measures

1.        Confirm receipt of notification of failure in writing;

2.        Notify Contractor;

3.        Require Contractor to propose remedial measures for the analysed noise problem;

4.        Ensure remedial measures are properly implemented

1.        Submit noise mitigation proposals to IEC;

2.        Implement noise mitigation proposals

ET – Environmental Team, IEC – Independent Environment Checker, ER – Engineer Representative

4.2              Operational Phase

 

Results of operational noise assessment indicate that the NSRs will not be affected by fixed plant noise sources and therefore operational phase noise monitoring is not required.

 


5.                  WATER QUALITY IMPACT

 

In accordance with the recommendations of the EIA, mitigation measures have been proposed during the construction phase of the Project.  Details of the mitigation measures are presented in Appendix E - Implementation Schedule.

 

In accordance with the recommendations of the EIA, water quality EM&A is required during dredging and sandfilling activities.  In addition, baseline water quality monitoring will be required prior to the commencement of construction activities.  The following Section provides details of the water quality monitoring to be undertaken by the ET to verify the distance of sediment plume dispersion and to identify whether the potential exists for any indirect impacts to occur to ecological sensitive receivers.  The water quality monitoring programme will be carried out to ensure that any deteriorating water quality is readily detected and timely action taken to rectify the situation.  The status and locations of water quality sensitive receivers and the marine works location may change after issuing this Manual.  If required, the ET in consultation with the Contractor(s) will propose updated monitoring locations and seek approval from the ER, the IEC and EPD.

 

5.1       Construction Phase

 

Water Quality Parameters Measurements of Dissolved Oxygen (DO) concentration (mg L-1), DO saturation (%), Salinity (mg L-1), Temperature (ºC) and Turbidity (NTU) will be taken in situ by the ET at monitoring stations identified below.  Water samples for the measurements of SS (mg L-1) and chlorophyll-a (µg L-1) will also be collected for laboratory analysis.  In addition to the water quality parameters, other relevant data will also be measured and recorded in Water Quality Monitoring Logs (Appendix C), including the location of the sampling stations, water depth, time, weather conditions, sea conditions, tidal stage, current direction and speed, special phenomena and work activities undertaken around the monitoring and works area that may influence the monitoring results.  Observations on any special phenomena and work underway at the construction site at the time of sampling will also be recorded.

 

For water quality monitoring, the following equipment will be supplied and used by the ET.  The use of similar equipment is subject to prior approval from the IEC.

 

5.1.1        Monitoring Equipment and Methodology

 

For water quality monitoring, the following equipment should be supplied and used by the environmental contractor.

·         Dissolved Oxygen and Temperature Measuring Equipment - The instrument should be a portable, weatherproof dissolved oxygen measuring instrument complete with cable, sensor, comprehensive operation manuals, and should be operable from a DC power source.  It should be capable of measuring: dissolved oxygen levels in the range of 0–20 mg L-1 and 0-200% saturation; and a temperature of 0-45 degrees Celsius.

It should have a membrane electrode with automatic temperature compensation complete with a cable of not less than 35 m in length.  Sufficient stocks of spare electrodes and cable should be available for replacement where necessary (for example, YSI model 59 meter, YSI 5739 probe, YSI 5795A submersible stirrer with reel and cable or an approved similar instrument).

 

·         Turbidity Measurement Equipment – The instrument shall be a portable, weatherproof turbidity-measuring instrument complete with comprehensive operation manual.  The equipment shall use a DC power source.  It shall have a photoelectric sensor capable of measuring turbidity between 0-1000 NTU (e.g. Hach model 2100P or an approved similar instrument).

 

·         Salinity Measurement Instrument - A portable salinometer capable of measuring salinity in the range of 0-40 ppm should be provided for measuring salinity of the water at each monitoring location.

 

·         Water Depth Detector - A portable, battery-operated echo sounder should be used for the determination of water depth at each designated monitoring station.  A detector affixed to the bottom of the work boat, if the same vessel is to be used throughout the monitoring programme, is preferred.

 

·         Current Velocity and Direction – No specific equipment is recommended for measuring the current velocity and direction.  However, the contractor should seek approval of their proposed equipment with the client prior to deployment.

 

·         Positioning Device - A hand-held or boat-fixed type digital Global Positioning System (GPS) with way point bearing indication or other equipment instrument of similar accuracy, should be provided and used during water quality monitoring to ensure the monitoring vessel is at the correct location before taking measurements.  GPS or the equivalent instrument, calibrated at appropriate checkpoint (e.g. Quarry Bay Survey Nail at Easting 840683.49, Northing 816709.55) should be provided and used to ensure the monitoring station is at the correct position before taking measurement and water samples.

 

·         Water Sampling Equipment - A water sampler, consisting of a transparent PVC or glass cylinder of not less than two litres, which can be effectively sealed with cups at both ends, should be used (Kahlsico Water Sampler 13SWB203 or an approved similar instrument).  The water sampler should have a positive latching system to keep it open and prevent premature closure until released by a messenger when the sampler is at the selected water depth.

 

All in situ monitoring instruments should be checked, calibrated and certified by a laboratory accredited under HOKLAS or any other international accreditation scheme before use, and subsequently re-calibrated at 3-month intervals throughout all stages of the water quality monitoring.  Except for the Current Velocity and Direction water flow meter will be calibrated very two years as recommended by the manufactory. Responses of sensors and electrodes should be checked with certified standard solutions before each use. 

 

For the on-site calibration of field equipment, the BS 1427: 1993, Guide to Field and On-Site Test Methods for the Analysis of Waters should be observed.  Sufficient stocks of spare parts should be maintained for replacements when necessary.  Backup monitoring equipment should also be made available so that monitoring can proceed uninterrupted even when equipment is under maintenance, calibration etc.

 

Water samples for SS and chlorophyll-a measurements should be collected in high density polythene bottles, packed in ice (cooled to 4° C without being frozen), and delivered to a HOKLAS laboratory as soon as possible after collection.

 

All laboratory work should be carried out in a HOKLAS accredited laboratory.  Water samples of about 1,000 mL should be collected at the monitoring and control stations for carrying out the laboratory determinations.  The determination work should start within the next working day after collection of the water samples.  The analysis shall commence within 24 hours after collection of the water samples.  The analyses should follow the standard methods as described in APHA Standard Methods for the Examination of Water and Wastewater, 19th Edition or later, unless otherwise specified (APHA 2540D for SS).

 

The submitted information should include pre-treatment procedures, instrument use, Quality Assurance/Quality Control (QA/QC) details (such as blank, spike recovery, number of duplicate samples per-batch etc), detection limits and accuracy.  The QA/QC details should be in accordance with requirements of HOKLAS or another internationally accredited scheme.                  

 

5.1.2    Monitoring Stations

 

The monitoring station locations have been established to identify potential impacts to water quality sensitive receivers which are shown in Figure 5.1.

 

Prior to, during and after the dredging and sandfilling works, water quality sampling will be undertaken at stations situated around the dredging area and at the sensitive receivers.  The monitoring at those stations is to ensure the dredging and sandfilling works of the Project will not cause deterioration in water quality outside the impact (mixing) zone, in particularly at the nearby sensitive areas (shown in Figure 5.1).

 

·         R1 is a Reference Station located to the south of the dredging/sandfilling area, which is not supposed to be impacted by the dredging/sandfilling works.  R1 is a representative station for the background water quality for Tolo Harbour as it is at the channel where the water exchange between the enclosed Plover Cove and Tolo Harbour take place;

 

·         R2 is a Reference Station located to the southwest of the dredging/sandfilling area, which is not supposed to be impacted by the dredging/sandfilling works. R2 is a representative station for the background water quality in the Plover Cove region;

 

·         I1, I2 and I3 are the Impact Stations just outside the mixing zone, which is unlikely to be impacted by the dredging/sandfilling works;

 

·         FCZ1 represents the Sensitive Receiver located at the Yim Tin Tsai East Fish Culture Zone, which is about 1.5 km to the southwest of the dredging/sandfilling area.  Deterioration of water quality at this station is not anticipated;

 

·         M1 represents the Sensitive Receiver located at the Ting Kok SSSI, which is about 800 m to the west of the dredging/sandfilling area.  Deterioration of water quality at this station is not anticipated;

 

·         W1 represents the Sensitive Receiver located at the Water Sport Centre, which is about 250 m to the southeast of the dredging/sandfilling area, which is unlikely to be impacted by the dredging/sandfilling works.

 

·         G1 is the Gradient Station to assist in the identification of the source of any impact.

 

The suggested co-ordinates of these monitoring stations are listed in Figure 5.1.

 

The monitoring stations will be sampled during Baseline Monitoring (prior to the dredging works), Impact Monitoring (during dredging and sandfilling works) and Post Construction Monitoring (after completion of sandfilling work).

 

5.1.3    Monitoring Frequency

 

For baseline, impact and post-project monitoring, monitoring should be undertaken 3 days per week, at mid-flood and mid-ebb tides, with sampling/ measurement at the designated stations.  The intervals between 2 consecutive sets of monitoring should not be less than 36 hours except where there are exceedances of Action and/or Limit Level, in which case monitoring frequency should be increased.  The tidal range for each of the flood and ebb tide should not be less than 0.5 m.

 

The water quality sampling will be undertaken within a 3-hour window of 1.5 hour before and 1.5 hour after mid flood and mid-ebb tides.  The Environmental Team will be responsible for liaison with the engineering contractor to confirm whether dredging/sandfilling works are being undertaken during the water quality sampling.

 

Measurements shall be taken at 3 water depths: 1m below water surface, mid-depth and 1m above sea bed, except where the water depth less than 6m, the mid-depth station may be omitted.  Should the water depth be less than 3 m, only the mid-depth station will be monitored.  The ET Leader shall seek approval from the IEC and DEP on all the monitoring stations.

 

Replicates in-situ measurements and samples collected from each independent sampling event are required for all parameters to ensure a robust statistically interpretable dataset.

 


5.1.4    Baseline Monitoring

 

Baseline Monitoring will comprise sampling 3 days a week, at mid-flood and mid-ebb tides, for at least 4 weeks prior to the commencement of the dredging works.  There shall not be any marine construction activities in the vicinity of the monitoring stations during the baseline monitoring. The monitoring will be undertaken at the specified eight stations in total, as shown in Figure 5.1.  The intervals between 2 consecutive sets of monitoring should not be less than 36 hours.  The baseline monitoring schedule should be provided to EPD for agreement at least 2 weeks prior to commencement of the baseline monitoring work.

 

5.1.5    Impact Monitoring

 

Impact Monitoring will comprise sampling 3 days a week, at mid-flood and mid-ebb tides, during the dredging and sandfilling works.  The monitoring will be undertaken at the specified eight stations as the Baseline Monitoring stations, as shown in Figure 5.1.  The intervals between 2 consecutive sets of monitoring should not be less than 36 hours except where there are exceedances of Action and/or Limit Levels, in which case the monitoring frequency may be increased.  The monitoring results should be included in the EM&A reports.

 

5.1.6    Post-Project Monitoring

 

Upon the completion of the sandfilling works, Post-project Monitoring shall be conducted for 4 weeks in the same manner as the Baseline Monitoring.

 

5.1.7    Compliance / Action Event Plan

 

Water quality monitoring results will be evaluated against Action and Limit levels shown in Table 5.1.

 

It should be noted that all Action/Limit levels presented in Table 5.1 is derived by the baseline data which collected before commencement of construction works.  Actions to be taken in the event that the Action or Limit Levels are exceeded are shown in Table 5.2.


Table 5.1     Action and Limit Levels for Water Quality (based on the Results of the Baseline Report)

Monitoring Location

Depth Average of SS (mg/L)

Action Level

Limit Level

I1

7.0

OR 120% of any reference stations at the same tide of the same day

7.5

OR 130% of any reference stations at the same tide of the same day

I2

7.0

8.1

I3

8.3

15.0

W1

8.0

8.6

M1

10.0

11.0

FCZ1

7.0

8.0

 

Monitoring Location

Chlorophyll-a (μg/L)

Surface, Middle & Bottom

Action Level

Limit Level

I1

11.1

12.1

I2

11.0

13.1

I3

11.3

14.5

W1

11.3

16.1

M1

16.9

42.4

FCZ1

11.8

12.5

 



Monitoring Location

Dissolved Oxygen (mg/L)

Depth Average of Surface and Mid-depth

Bottom

Action Level

Limit Level

Action Level

Limit Level

I1

5.08

4.80

N/A

N/A

I2

5.26

4.88

3.64

3.37

I3

5.03

4.77

4.09

3.19

W1

4.67

4.54

2.41

2.33

M1

4.73

4.70

N/A

N/A

FCZ1

5

5

3.43

3.18

 

Monitoring Location

Depth Average of Turbidity (NTU)

Action Level

Limit Level

I1

2.8

OR 120% of any reference stations at the same tide of the same day

2.9

OR 130% of any reference stations at the same tide of the same day

I2

3.5

7.7

I3

2.6

3.0

W1

2.9

3.3

M1

5.2

6.6

FCZ1

3.2

3.4

(a)        For DO, non-compliance of water quality limits occurs when monitoring result is lower than the limits

(b)        For SS, chlorophyll-a and turbidity, non-compliance of the water quality limits occurs when monitoring result is higher than the limits.

(c)        In accordance with EM&A Manual Table 5.1, both Action and Limit Levels for DO (surface and middle) in the FCZ1 are less than 5 mg/L.

 

 

 


Table 5.2   Event and Action Plan for Water Quality

EVENT

ACTION

ET

IEC

ER

Contractor

Action Level being exceeded by one sampling day

1.        Repeat in-situ measurement to confirm findings;

2.        Identify source(s) of impact;

3.        Inform the IEC and the Contractor;

4.        Check monitoring data, all plant, equipment and the Contractor’s working methods;

5.        Discuss mitigation measures with the IEC and the Contractor;

 

1.        Discuss with the ET and the Contractor on the mitigation measures;

2.        Review proposals on mitigation measures submitted by the Contractor;

3.      Assess the effectiveness of the implemented mitigation measures.

1.        Discuss with the IEC on the proposed mitigation measures;

2.        Make agreement on the mitigation measures to be implemented.

1.        Inform the ER and confirm notification of the non-compliance in writing;

2.        Rectify unacceptable practice;

3.        Check all plant and equipment;

4.        Consider changes of working methods;

5.        Discuss with the ET and the IEC and propose mitigation measures to the IEC and ER;

6.        Implement the agreed mitigation measures.

Action Level being exceeded by more than one consecutive sampling days

1.        Repeat in-situ measurement to confirm findings;

2.        Identify source(s) of impact;

3.        Inform the IEC and the Contractor;

4.        Check monitoring data, all plant, equipment and Contractor’s working methods;

5.        Discuss mitigation measures with the IEC and the Contractor;

6.        Ensure mitigation measures are implemented;

 

1.        Discuss with the ET and the Contractor on the mitigation measures;

2.        Review proposals on mitigation measures submitted by the Contractor accordingly;

3.        Assess the effectiveness of the implemented mitigation measures.

1.        Discuss with the IEC on the proposed mitigation measures;

2.        Make agreement on the mitigation measures to be implemented;

3.        Assess effectiveness of the implemented mitigation measures.

1.          Inform the ER and confirm notification of the non-compliance in writing;

2.          Rectify unacceptable practice;

3.          Check all plant and equipment;

4.          Consider changes of working methods;

5.          Discuss with the ET and the IEC and propose mitigation measures to the IEC and ER within 3 working days;

6.          Implement the agreed mitigation measures.

Limit Level being exceeded by one consecutive sampling day

1.        Repeat in-situ measurement to confirm findings;

2.        Identify source(s) of impact;

3.        Inform the IEC, the Contractor and the DEP;

4.        Check monitoring data, all plant, equipment and the Contractor’s working methods;

5.        Discuss mitigation measures with the IEC, the ER and the Contractor;

6.        Ensure mitigation measures are implemented.

 

1.        Discuss with the ET / Contractor on the mitigation measures;

2.        Review proposals on mitigation measures submitted by the Contractor and advise the ER accordingly;

3.        Assess the effectiveness of the implemented mitigation measures.

1.        Discuss with the IEC, the ET and the Contractor on the proposed mitigation measures;

2.        Request the Contractor to critically review the working methods;

3.        Make agreement on the mitigation measures to be implemented;

4.        Assess the effectiveness of the implemented mitigation measures.

1.          Inform the ER and confirm notification of the non-compliance in writing;

2.          Rectify unacceptable practice;

3.          Check all plant and equipment;

4.          Consider changes of working methods;

5.          Discuss with the ET, the IEC and the ER and propose mitigation measures to the IEC and the ER within 3 working days;

6.          Implement the agreed mitigation measures.

Limit Level being exceeded by more than one consecutive sampling days

1.        Repeat in-situ measurement to confirm findings;

2.        Identify source(s) of impact;

3.        Inform the IEC, the Contractor and DEP;

4.        Check monitoring data, all plant, equipment and Contractor’s working methods;

5.        Discuss mitigation measures with the IEC, the ER and the Contractor;

6.        Ensure mitigation measures are implemented;

 

1.          Discuss with ET and Contractor on the mitigation measures;

2.          Review proposals on mitigation measures submitted by the Contractor and advise the ER accordingly;

3.          Assess the effectiveness of the implemented mitigation measures.

1.        Discuss with the IEC, the ET and the Contractor on the proposed mitigation measures;

2.        Request Contractor to critically review working methods;

3.        Make agreement on the mitigation measures to be implemented;

4.        Assess effectiveness of the implemented mitigation measures;

5.        Consider and instruct, if necessary, the Contractor to slow down or to stop all or part of the marine work until no exceedance of Limit Level.

1.          Inform the ER and confirm notification of the non-compliance in writing;

2.          Rectify unacceptable practice;

3.          Check all plant and equipment;

4.          Consider changes of working methods;

5.          Discuss with the ET, the IEC and the ER and propose mitigation measures to the IEC and the ER within 3 working days;

6.          Implement the agreed mitigation measures;

7.          As directed by the ER, slow down or stop all or part of the construction activities.


5.2       Post-Construction Phase

 

The Post-Construction Phase is defined as after completion of construction works but before the operation of the beach.  No sewage and wastewater generated from the beach building facilities will be discharged into the beach or marine environment, water quality impact due to sewage and wastewater discharge from the beach building facilities is not anticipated (refer to EIA Report Section 6).

 

5.2.1        E. coli Monitoring

 

Monitoring for E. coli is recommended at the outfall of the eastern culvert and western channel within six weeks after the completion of construction works.  The purpose of the monitoring is to investigate the characteristics of E. coli loading in the box culvert/channel and to establish relationship with E. coli levels at the beach.  Samples will be collected at the locations specified in Figure 5.2 at/near the outlet of the outfall when no influx of seawater occur (e.g. during low tide).  In view of E1, E2 and E3 are watercourse and drainage, surface samples will be collected at these monitoring stations. For E5, which is beach water quality station, the samples will be collected at one metre depth and 0.3 metre below the water surface.  During the same tide, E. coli samples should be collected at EPD’s routine beach monitoring stations.  The sampling team should confirm the locations of EPD’s routine monitoring stations prior to the commencement of any sampling events.  In some occasions, it is not practicable to take the samples at EPD’s routine monitoring stations, for example, the water is too shallow.  Then the sampling team should determine the nearest sampling locations which should be as close to EPD’s stations as possible.  The coordinates of all the sampling locations should be recorded. 

 

E. coli samples should be stored in cool box (4°C) during the sampling and transportation and should be delivered to the HOKLAS accredited laboratory, or equivalent, to determine the E. coli content in the sample. 


Other water quality parameters, i.e., pH, Dissolved Oxygen (DO) concentration (mg L-1), DO saturation (%), Salinity (mg L-1), Temperature (ºC) and Turbidity (NTU) should be taken in situ by the sampling team at same monitoring stations as for E.coli measurements.  Observations such as and weather and beach conditions, should also be recorded.

 

Sampling should be conducted twice per week within six weeks after the completion of construction works.

 

5.2.2        Progress of DSD’s Village Sewerage Projects

 

Implementation programme of the village sewerage projects should be monitored to achieve the target sewerage connection rate to communal sewers before the beach is put into operation.

 


5.3       Operational Phase

 

5.3.1    Routine Monitoring of Beach Water Quality

 

EPD has well established a comprehensive water quality monitoring programme for all gazetted beaches to detect any deterioration of beach water quality, which will also be implemented in this Lung Mei bathing beach. 

 

EPD’s current monitoring programme requires all gazetted beaches are monitored at least three times per month during bathing seasons.  During non-bathing seasons, gazetted beaches are monitored once per month.  The monitoring data assists to detect any deterioration of beach water quality.   In case the beach water quality tends to be deteriorated, EPD will continue monitoring of the beach water quality and provide Leisure and Cultural Services Department (LCSD) the monitoring data.  In case the beach water quality tends to be deteriorated, LCSD will decide the most appropriate method of improving the beach water quality.

 

In case the beach water quality at Lung Mei tends to be deteriorated and becomes not desirable for swimming, LCSD will close the beach temporarily until the beach water quality becomes suitable for swimming.  EPD will continue monitoring the beach water quality and provide LCSD the monitoring results.    

 

5.3.2        Red Tides

 

In the event of red tide that may occur naturally, similar to the practice adopted for other gazetted beaches by LCSD, Lung Mei beach may be closed to swimmers in accordance with the relevant procedures.

 


6.                  WASTE MANAGEMENT

 

6.1       Construction Phase

 

In order to ensure that the construction contractor has implemented the recommendations of the EIA Report, regular site audits will be conducted of the waste streams, to determine if wastes are being managed in accordance with the approved procedures and the site Waste Management Plan.  The audits will look at all aspects of waste management including waste generation, storage, recycling, transport and disposal.  An appropriate audit programme will be undertaken with the first audit conducted at the commencement of the construction works.  Routine weekly site inspections will also include waste management.

 

6.2              Operational Phase

 

As it is not expected that large quantities of waste will be generated from the operation of the bathing beach and no adverse environmental impacts will arise with the implementation of good waste management practices.  Waste monitoring and audit programme for the operational phase of the proposed beach development will not be required.


7.                  ECOLOGY

 

7.1       Pre-Construction Phase (Land-based)

 

7.1.1    Common Rat Snake

 

To undertake a one day-time search of the Common Rat Snake within the land based Proposed Beach Development just before the commencement of the construction works.  All recorded Common Rat Snake will be caught by hand and translocated to the shrubland at the north of the Study Area, immediately after the search.  The Common Rat Snake search and translocation works will be undertaken by a qualified ecologist.

 

7.2       Ecological Monitoring (Marine-based)

 

7.2.1    Marine Ecological Monitoring  (Except seahorses)

 

7.2.1.1 General

 

A qualified Marine Ecologist shall be engaged for carrying out the marine ecological monitoring. The qualified Marine Ecologist shall hold a postgraduate degree in a marine science based subject from a recognised university and shall have at least seven years post-graduate experience in marine field surveys as well as fish and echinoderm identification in Hong Kong.  He shall have experience in the design, planning and implementation of marine organisms relocation within Hong Kong and also comply with the requirements of the qualified Fish Specialist as specified in Environmental Permit Condition 3.11 (Permit No. EP-388/2010) of the Project.

 

7.2.1.2 Objectives

 

The objectives of the marine ecological monitoring are to collect data for determining whether there is any impact on the marine ecological resources (i) in the vicinity of the Site due to the development of the bathing beach at Lung Mei, and (ii) at the Reception Site of Ting Kok East due to translocation of the target marine fauna. (Figures 7.1 and 7.2)

 

 

7.2.1.3 Monitoring Methodology

 

The marine ecological monitoring